Production of lip balm with nano extract of beetroot (Beta vulgaris L.) and rosella flower (Hibiscus sabdariffa L.) as a natural moisturizer. JPS [Internet]. 2024 Nov. 20 [cited 2026 Oct. 22];7(4):690-706. Available from: https://journal-jps.com/new/index.php/jps/article/view/480